diff --git a/index.js b/index.js
index f9cf85e..319b544 100644
--- a/index.js
+++ b/index.js
@@ -195,13 +195,13 @@ const fetchApiData = (reqPath, sign) => {
 
 // 从真实 URL 获取数据并写入缓存
 const fetchAndServe = (data, tempCacheContentFile, cacheContentFile, res) => {
-    https.get(data.realUrl, { timeout: requestTimeout * 10,rejectUnauthorized: false }, (realRes) => {
+    https.get(data.realUrl, { timeout: requestTimeout * 10, rejectUnauthorized: false }, (realRes) => {
         const cacheStream = fs.createWriteStream(tempCacheContentFile, { flags: 'w' });
 
         let isVideo = data.path && typeof data.path === 'string' && data.path.includes('.mp4');
         data.headers['content-length'] = realRes.headers['content-length'];
-        res.writeHead(realRes.statusCode, {
-            ...data.headers,
+
+        const defaultHeaders = {
             'Cloud-Type': data.cloudtype,
             'Cloud-Expiration': data.expiration,
             'Content-Type': isVideo ? 'video/mp4' : 'application/octet-stream',
@@ -212,7 +212,8 @@ const fetchAndServe = (data, tempCacheContentFile, cacheContentFile, res) => {
             'Connection': 'keep-alive',
             'Date': new Date().toUTCString(),
             'Last-Modified': new Date().toUTCString(),
-        });
+        };
+        res.writeHead(realRes.statusCode, Object.assign({}, defaultHeaders, data.headers));
 
         realRes.pipe(cacheStream);
         realRes.pipe(res);
@@ -250,8 +251,8 @@ const serveFromCache = (cacheMetaFile, cacheContentFile, res) => {
     cacheData.headers['content-length'] = fs.statSync(cacheContentFile).size;
 
     readStream.on('open', () => {
-        res.writeHead(200, {
-            ...cacheData.headers,
+
+        const defaultHeaders = {
             'Cloud-Type': cacheData.cloudtype,
             'Cloud-Expiration': cacheData.expiration,
             'Content-Type': isVideo ? 'video/mp4' : 'application/octet-stream',
@@ -262,7 +263,9 @@ const serveFromCache = (cacheMetaFile, cacheContentFile, res) => {
             'Connection': 'keep-alive',
             'Date': new Date().toUTCString(),
             'Last-Modified': new Date().toUTCString(),
-        });
+        }
+
+        res.writeHead(200, Object.assign({}, defaultHeaders, cacheData.headers));
         readStream.pipe(res);
     });